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#1 2011-04-27 18:32:58

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Why WiFi/n needs repair of network data rate synchronization ?

WiFi/n or /g or /b are designed to run data rate at the fastest speed depending on number of users on the network. That is why you see data rates change suddenly from 54 mbps to 11 mbps in many steps. If 28 users all have their WiFi changing, the gateway router will go crazy. A few users maybe can have synchronization of data rate clocks, no many at all.

When data rate clock can not sync with gateway router data rate clock. The channel carrier frequency may still be connected. The network data rate clocks had to be repaired to be synchronized again, and new ip address assigned(data integrity assured).

So, the drivers have to change depending on the number of WiFi users. And the slowest data rate established for all 28 users at 1 mbps. Without data rate clocks hunting; the gateway router can synchronize with all the data rate clocks. No network repair needed.

And a few bit torrent users can have wait state ping and synchronized for 24 mbps data rate by themselves on  another gateway router(meshed for 24 mbps even). /g only two users. /n maximum(300 mbps) for12 users at 24 mbps.

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2011-04-27 18:32:58

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#2 2011-04-27 20:17:51

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

In XP tray, WiFi transmission icon shows packet sent. If it shows several packets sent and no reply, you know data rate clock is no longer synchronized. Which means gateway router can not read packet header to connect to any http address or search DNS servers for address.

You then have to manually repair the WiFi network by hand. click on WiFi transmission icon in tray; click on support; click on repair and wait. When network is restored, refresh your request for webpage.

Someday, Microsoft may decide to add automatic repair network data rate synchronization, the minute repeated packets TX sent not getting RX response? Its a problem you can see in the tray WiFi icon; thus its signals can trigger automatic repair of WiFi gateway router network.

By the way, Microsoft might as well redo all the /b/g/n plug and play standard WiFi drivers with a single utility to configure features of all WiFi network drivers? Users with /n units can serve as meshed gateways for slower WiFi users. /n mimo can be programmed to do 6 sideband meshed /g gateway routers?

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#3 2011-04-28 10:08:07

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

The troubles we are exploring is that one router can not receive all the data rate clocks from 1 to 54 mbps. Some users will lose their synchronization. WiFi will become slower than dialup modem.

Lithuania is the earliest Wifi hotspot user. They installed 3com 802.11/b as gateway router on gsm towers. They are still using them today. Why not change to /n? many of those pcmcia WiFi failed and got replaced. But apparently, they can have many routers(13 channels each but many data rate users) on the tower and set them to different data rates and each data rate can receive Wifi signals synchronized.

The trouble is that WiFi that we can buy today is made for homes using home gateway routers. Drivers tried to do maximum speed. These WiFi drivers can not have too many users.

When cable TV goes ondemand for 346 mbps service(ARRS). They need internet cable modem to do ondemand paid fast 8+8 channel bonding, charged by the minute to gigabit ethernet on your computer. Regular service is 5-15 mbps packet shared 2+2 channel bonding on 10/100 ethernet. Ondemand fast service may use wireless overide from distribution to cable modem.

Worldwide Wireless hotspot is now going through thorough examination of signal transmission traffic study.

Footnote:
For countrywide wifi systems get this pdf:
http://wi-fi.unas.cz/dokumentace/3CRWE8 … -Guide.pdf

Also google 3Com MAP 3850 installed in Latvia, Lithuania and other countries.

These 3Com MAP system uses 802.11/b/g/n standards. they can be subsystem on edgeQam channels(1 ghz carrier frequency). WiFi channel frequencies ride on edgeQam carrier(satellite transmission) as IF for discriminators? If sync on leading edge and trailing edge of square wave,  2x data speed can be run as double data rate.

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#4 2011-05-06 22:54:16

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Microsoft is doing autoupdate on USB WiFi traffic control. What is wrong is their misunderstanding of data rate speed and traffic speed. They hope Tx speed can be faster, and Rx speed should be slower, for data integrity. Alas, the TX speed created unreadable packets that never get data downloads from websites. even though connection was perfect for channel carrier frequency synchronization. Data rate of over 11 mbps uses clocks of over 11 mhz. The higher the frequency, the shorter the transmission range. And the signal is weaker.

So, they should experiment more with 1 or 2 mbps Tx and RX data rates. Then increase speed of data rates to support data integrity first and foremost. Then establish a ceiling for good WiFi transmission based on the maximum limit of data rate speed. Study bcm4318 WiFi drivers and Cisco router drivers?

Traffic speed of data rate clock change, needs an overhead to synchronize the clocks in gateway router. To serve many WiFi packets if all of different data rate speeds slow down the overall number of packets that can be processed by gateway router. On mashed routers of over 100 users, the service should be streamlined with one single data rate, never vacilating and wasting time shifting clock speed.

Once data synchronization gave data integrity, when checksum is corrupted by chipset overheating; windows has to have radio off to cool down fast. Then radio on to reconnect for data transfer. Cool down fast can reconnect fast too. This will eventually get traffic in control by not having too much WiFi channel radio signals of 10,000 users.

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#5 2011-05-08 11:26:47

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Gateway routers may also need reset if overheated by many users doing packets continously. There maybe also download manager software problems for gateway routers to keep users downloads finishing task to be performed.

This sometime shows on the browsers as connection problems. If it is your WiFi, you can repair the connection to the network by disable, enable and obtain ip address again to reset your own WiFi.

If gateway router needs reset, this maybe a Microsoft autoupdate feature in your browser?

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#6 2011-05-09 20:36:47

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

In data rate clock synchronization, semiconductors use PLL to phase lock the frequency. Unfortunately semiconductor has temperature changes to effect PLL efficiency. Ralink chipset will stabilize in use after low temperature butn-in. And temperature in operation will lower, then heat up upon fast data transmission(this is  aproblem which needs short term repair of network data rate frequency sync to read data).

I am now trying an insulation temperature oven by scotch taping the pcboard and all semiconductors. The oven holds heat to keep operating temperature at maximum. which triggers the chipset to go offline and cool down then come back online. The Ralink utlity red R goes white when it goes off line. Signals work when red R is on.

This keeps the chipset from having to repair network data rate clock synchronization all the time due to temperature flucturation. Also keeps it working at a more steady temperature. Now, you can see that white R comes on and off when WiFi is inactive. And if WiFi network is repaired it will hold steady PLL to work consistantly.

Footnote:
The oven is made of two inch wide scotch tape. cover the front pcboard, then fold over to cover the back of pcboard. This is on USB Ralink WiFi/g(2870 drivers and utility) with antenna(3i extension). Now data rate clock can be optimized for steady temperature set by hardware, by utility feedback of maximum temperature allowed to PLL clock speed.

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#7 2011-05-11 08:59:59

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

At first using the added scotch taped oven, the data rate clock sync(24 mbps TX) had to be done three times from starting cool then hotter, then hotter yet until White R shows on the tray.

Now Microsoft runs it hot(54 mbps TX packets) immediately to white R on the tray. But still every once in a while the router network needed repair to speed up download(1 mbps) by repairing TX packet data rate sync(24-54 mbps) to the router.

Overall, the Ralink WiFi/g is now more or less usable, but needed attention to get repaired network if TX packets not read by router(only sent no reply signals).

Downloads of software by free download manager runs upto 110 kBps; but occasionally dropped down to 5kBps(10x slower than 1 mbps).

Running WiFi hot, gets more sensitive to weak signals from router. Broadcom4318 also use paper or scotch taped oven to keep temperature more hot and steady.

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#8 2011-05-12 10:18:06

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Now that Wifi sort of works, there is a problem of garbage collection iwth IE8. After several windows are opened, 512 mB no longer is sufficient. WiFi slowed down to not usable, unless windows were closed and IE8 rebooted, to clear history of webpages.

Once IE8 is rebooted, google as home gets connected very fast. Otherwise, google website can not be connected by Wifi. Virtual memory of 2 gB was not used, when drams were used up for history of webpages.

The way it is, you have to clear garbage, by rebooting IE8 and get on Wifi without ever repairing network.

If its not one thing its another. I am resisting going upto 1 gB of drams. But its obvious that every Wifi packet need memory to proceed. Running out of memory, or can not use hdd for virtual memory, forces clearing garbage manually often. May even have to reboot XP to give WiFi packets room to proceed.

We now have uncovered many problems of excess baggage of bloated webpages. The need for reduced pixels in thumbnails of webpages(video) to expand into your monitor resolution is coming too soon. More layers of data compression(mjpeg zoom) using video compression is coming.

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#9 2011-05-13 10:06:19

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Report on USB Ralink WiFi/g performance on dsktop. 05/13/2011 Based on Microsoft XP autoupdate for Ralink.

For the first hour of usage, it started very fast. Then it slowed down to no reply from router at all. It has to be repaired on the network(renew ip address), then it is usable again. This will occur for the rest of the day, whenever router stopped replying.

After a while, it could be that free drams are all used up. Packets generate very slowly from your computer. You have to reboot browser to get Wifi working without repair.

If you can live with 512 mB of drams all day; then you can wait for Microsoft to come up with a solution to collect garbage and keep your computer with reserved memory to service router data transfer. Clear webpage history as new webpage downloads come into its reserved free memory. Packets(dotnet or posix) use its own reserved memory space too.

Will continue to try WiFi performance to see if any other solutions need apply.

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#10 2011-09-22 09:58:07

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

By wifi traffic control, the problems of needing wifi connect repair to re-establish ip address is no longer required. No mid air collision of signals to corrupt data. IP address is now stored in router memory. This saves time on the net, not to have to repair packet connection at the router ever.

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#11 2011-09-25 09:23:49

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

When packets got lossy, wifi transmission stops. No more packets repeated due to new browser requests for users. This is because browser shuts down internet if webpages are too slow. firefox has that problem very badly.

The current browser codes all use bit torrent to download a lengthy webpage. but if the website is too busy bit torrent mode is forced shut down. You have to renew your download request. This just further agrevates the busy condition. Denial of service can not discourage users enough to ease the traffic.

We have seen ondemand servers doing bit torrent in sequential packet delivery. DNS servers can not be used because the scripts will be too long to agrevate busy condition..

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#12 2011-09-29 17:42:16

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Sluggish response of your wifi card can be a driver that needed reinstall to get the priority and synchronization done correctly.

It never hurts but may streamline the hook points. The first time you install the drivers, it may have too many fragmentation no local defrag in W2k. Reinstall may avoid fragmentation.

Dlink DWA-642 in W2k got a reinstall of drivers to get smooth webpage loading. and the connection to router sped up.

Footnote:
Microsoft autoupdate has local defrag if they removed scandisk and defrag programs in your operating system.

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#13 2011-10-07 22:22:08

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Wireless radio signals are sensitive to jamming, reflection and interference. Some can be overcame by signal strength. Others by OFDMl frequency arrangement. So, for a router to handle more users. Keep your radio off is not downloading.

However, most new wifi cards use heat to make wifi radio more sensitive to signals and noise ratio. WiFi chipsets are run hot.

The new prospects for wifi demo circuit has been MiMo or multi parallel dats channels. That of course is not the end of technology parley. We are still ready to add to carrier frequency intermedia frequency and time delayed multiplexers of double data rate transfer. 8x speed is not new in DDR memory circuits.

So, new WiFi standards will be introduced to IEEE body of DDR(2mbps sync on leading and trailing edge of IF) in WiFi discriminators(IF of 1 mbps). Carrier frequencies of data channels will have subchannels of data rate clocks(1-54 mbps).

Slow cpu with lots of DMAs, but DDR in data channel wars of data transmission?DDR technology has been there for the taking.

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#14 2011-10-10 07:09:23

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

OFDM is ued by Motorola in their AM stereo radio technology. And the frequency response was 11000 hz top limit. This shows up in data integrity of wifi/g performance. Realtek wifi/g consistantly had resend of 54,000 packets among good packets of 14,000(74.4117647% data corrupted).

This makes /g useless; data transfer became very slow. Software download is maxed out at 200 KBps in library at signal strength of 68%. If /b is used at 5.5 mbps on DSSS technology Microsoft servers delivered 540 kBps in their drivers download at 42% signal strength from a distance. The use of OFDM maybe be limited to carrier frequency data channels of slow at 1 mbps data rate transfer tasks.

The future to be proposed to IEEE body of wifi standards is that we prefer to use edgeQam technology(1 ghz) in the 2.4 ghz range. which is successful in satellite transmission of data integrity. Carrier frequency of data channel use IF frequency to discriminate data, and carry time delayed multiplexer data channels.

We may have to start the discussion as early as possible. OFDM may need IF frequency(450khz or 4.5 mhz) discriminator very badly asap.

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#15 2011-10-12 13:33:22

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

The discovery of many older wifi802.11/b units use host sound card chipsets; made Linux drivers not usable after a while when hacker started to change dependency files. Then you might be unlucky to have a laptop with the wrong sound chipset that does not work with wifi drivers Linux developed. Then Alsa may have hook points wrong, both alsa and wifi stopped working when you install both.

Its all crap shots in the Linux world. With windows, some /b wifi can still work with Win98(TI acx-100/111), w2k(marvel 8335) etc. If your sound card drivers are installed first. Otherwise, you may have to reinstall your wifi drivers last.

There is much frustration when routers would not let you logon to a free wifi hotspot. And repair does not work? Data rate can not be synchronized, when signals are too low, or quality of data integrity is poor. Or you are the one that exceeded the quota of the gateway route ip addresses allowed. My first wif was 192.168.0.101, my second wifi could not logon.

The day will come; then we understood all the older wifi drivers and use them with new highly powerful gateway routers. The wifi traffic is now being changed as we use the free hotspots. Dialup modem is needed to backup faulty wifi traffic control.

So far, none of the mimo /n works without mutli data channel cache for wifi/n drivers in the firmware. the drivers are rolled back to /g drivers and actually only /b data rates are used. There is a long way to perfect wifi system.

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#16 2012-01-08 16:44:46

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Many /g/n wifi units had their connection disconnected in browser usage. The reason is the data rate change if router gets more or less users. The data rate changes with number of users connected to the router.

If you got bumped off, you may have to repair the connection to dhcp another ip address for new connection.

In wifi traffic control. you should fixed the data rate and stay connected. Even as an ocassional user, each time you connect to the router with the same ip address locked in the router.

The wifi traffic control software is coming soon, currently being developed by microsoft.

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#17 2012-03-21 21:06:46

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Radio frequency synchronization continues to be a problem. Router can heat up and shift frequency on data channel, and browser can not locate servers.

This can be temporarily synchronized by a simple radio scan. Then heat up will happen as traffic increases again. Then you need to rescan data channels again.

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#18 2012-03-31 19:01:09

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Dlink range booster N notebook adapter can claim 300 mbps and 4x further range than 802.11G.

Well, not quite. The older ones are resending almost all the ofdm packets The RE model is a little better, Then the DWA-652 is better than the 642 models. The 652 download is about 20 kBps when most ofdm packets are transferred about 65 kBps. This is using the drivers supplied by D-Link 642 v1.01. W2k use their utility to connect. XP use Microsoft zero configuration to connect. I am testing on W2k.

its amazing that Linux drivers(kernel 2.6.24) do better. No delays or resend of ofdm packets when you click on website to load.

EDUP broadcom chipset can do 65 kBps on ofdm packets. But old orinoco or most wifi/b units can do 600 kBps DSSS mode downloads on download manager in firefox(v1.5.0.12 to the latest v12.0).

Footnote:
ofdm packets resend due to interference. On range boosters of 3 antenna in parallel, there must be more interference from each antenna due to out of phase reflections from walls etc..

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#19 2012-12-01 12:51:47

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Recently updated iE9 on xp pro. Need to repair wifi when switched back and forth between Firefox and iE8.

Repair is not only ip address assignment but many other connections for DNS etc..

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#20 2013-11-11 08:48:45

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Why WiFi/n needs repair of network data rate synchronization ?

Dlink DWA-652 drivers now connects to router first then internet ip address. Router may be your first computer on wifi, serving as router for other wifi cards. If you only have one dwa-652 on, then you have to repair connection to get ip address before you are connected to internet.

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